/**
 * Created by su on 2017/7/28.
 */
var aneObj = function () {
    this.x = [];
    this.len = [];
};

aneObj.prototype.num = 50;
aneObj.prototype.init = function () {
    for (var i = 0; i < this.num; i++){
        this.x[i] = i * 16 + Math.random() * 20;
        this.len[i] = 200 + Math.random() * 50
    }
};
aneObj.prototype.draw = function () {
    ctx2.save();
    ctx2.globalAlpha = 0.6;
    ctx2.lineWidth = 20;
    ctx2.lineCap = "round";
    ctx2.strokeStyle = "#3b154e";
    for(var i = 0;i < this.num; i++){
        ctx2.beginPath();
        ctx2.moveTo(this.x[i],canHeight);
        ctx2.lineTo(this.x[i],canHeight-this.len[i]);
        ctx2.stroke();
    }
    ctx2.restore();
};


